Document Detail

Pyrrolizidine alkaloids in food: downstream contamination in the food chain caused by honey and pollen.
MedLine Citation:
PMID:  20967664     Owner:  NLM     Status:  In-Data-Review    
In recent years, there has been a steadily growing number of published data on pyrrolizidine alkaloids (PAs) in honey and pollen. This raises the question whether honey and/or pollen used as ingredients in food processing might provoke a downstream contamination in the food chain. Here we addressed two different facets in connection with PAs in honey and pollen. First, we analysed the PA content of several food types such as mead (n = 19), candy (n = 10), fennel honey (n = 9), soft drinks (n = 5), power bars and cereals (n = 7), jelly babies (n = 3), baby food (n = 3), supplements (n = 3) and fruit sauce (n = 1) that contained honey as an ingredient in the range of 5% to approximately 37%. Eight out of 60 retail samples were tested as being PA-positive, corresponding to 13%. Positive samples were found in mead, candy and fennel honey, and the average PA content was calculated to be 0.10 µg g(-1) retronecine equivalents (ranging from 0.010 to 0.484 µg g(-1)). Furthermore, we investigated the question whether and how PAs from PA pollen are transferred from pollen into honey. We conducted model experiments with floral pollen of Senecio vernalis and PA free honey and tested the influence of the quantity of PA pollen, contact time and a simulated honey filtration on the final PA content of honey. It could clearly be demonstrated that the PA content of honey was directly proportional to the amount of PA pollen in honey and that the transfer of PAs from pollen to honey was a rather quick process. Consequently, PA pollen represents a major source for the observed PA content in honey. On the other hand, a good portion remains in the pollen. This fraction is not detected by the common analytical methods, but will be ingested, and it represents an unknown amount of 'hidden' PAs. In addition, the results showed that a technically and legally possible honey filtration (including the removal of all pollen) would not be an option to reduce the PA level of the final product significantly.
M Kempf; M Wittig; K Schonfeld; L Cramer; P Schreier; T Beuerle
Related Documents :
15113974 - Soy protein allergy: incidence and relative severity.
10971114 - Immunoblot analysis of ige-binding antigens in paprika and tomato pollen.
13679824 - Antacid medication inhibits digestion of dietary proteins and causes food allergy: a fi...
8368454 - Does guanine concentration in house-dust samples reflect house-dust mite exposure?
22963454 - Human exposure to lead, cadmium and mercury through fish and seafood product consumptio...
24933684 - Balancing safety and enjoyment: current practice when recommending tastes for people wi...
Publication Detail:
Type:  Journal Article     Date:  2010-10-20
Journal Detail:
Title:  Food additives & contaminants. Part A, Chemistry, analysis, control, exposure & risk assessment     Volume:  28     ISSN:  1944-0057     ISO Abbreviation:  Food Addit Contam Part A Chem Anal Control Expo Risk Assess     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-03-01     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  101485040     Medline TA:  Food Addit Contam Part A Chem Anal Control Expo Risk Assess     Country:  England    
Other Details:
Languages:  eng     Pagination:  325-31     Citation Subset:  IM    
Universitat Wurzburg, D-97974, Wurzburg, Germany.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

Previous Document:  Saturated and aromatic mineral oil hydrocarbons from paperboard food packaging: estimation of long-t...
Next Document:  Parameter optimization of the fungicide (Vapam) sorption onto soil modified with clinoptilolite by T...